Portable digital audio player



FIG. 1 is a front, right perspective view of the portable digital audio player;

FIG. 2 is a front view thereof;

FIG. 3 is a front view thereof, with the base rotated 180 degrees;

FIG. 4 is a right view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a left view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a top view thereof, with the base rotated 90 degrees;

FIG. 9 is a bottom view thereof; and,

FIG. 10 is a bottom view thereof, with the base rotated 90 degrees. 

The ornamental design for a portable digital audio player, as shown and described. 